<template>
  <footer class="footer">
    <span class="todo-count">剩余<strong> {{total}} </strong></span>
    <ul class="filters">
      <li>
        <a :class="{selected:isSel===all}" href="javascript:;" @click="isSel=all">全部</a>
      </li>
      <li>
       <a :class="{selected:isSel===no}" href="javascript:;" @click="isSel=no">未完成</a>
      </li>
      <li>
        <a :class="{selected:isSel===yes}" href="javascript:;" @click="isSel=yes">未完成</a>
      </li>
    </ul>
    <button class="clear-completed" >清除已完成</button>
  </footer>
</template>

<script>
export default {
  props:["list"],
  data() {
    return {
     isSel:all
    };
  },
  computed:{
    total(){
 return this.list.length
    }
  
  }

}
</script>